Is this motor too good to be true?

I am doing research on motors for electric bikes, and I was wondering, is this motor too good to be true?http://robotmarketplace.com/products/0-HTIM1.html As far as i know, no one has incorporated it into a bike or scooter. Ive mostly seen it in hobby applications. Anyway, I was wondering, am I missing some crucial part or fact that would make this unsuitable for a bicycle power source? thanks.

I think you misunderstood me. Firstly, I dont plan to overvolt the motor for long, or too much-a couple minutes at 150% would be fine for my needs. And second, I plan to run it to the forward set of gears before the rear set. You would multiply the gear ratio by the next gear ratio, if you get my meaning. And thirdly, these are so cheap, I could simply buy two and run them at normal capacity, while still providing enough power to move forward.

Well your original question makes NONE of that clear ! "As far as i know, no one has incorporated it into a bike or scooter. Ive mostly seen it in hobby applications. Anyway, I was wondering, am I missing some crucial part or fact that would make this unsuitable for a bicycle power source? thanks."

...so what IS the full reduction through an existing bike gear train ? Not my field.

My comment on overvolting is really directed at your project, just a website anxious to make big headline numbers for the motors its customers melts...

Of course. I apologize, my original question was misleading, and I did not provide you with enough information. I was referring to the motor itself, and whether the ratings on the site could be trusted- I myself have very little experience with large electric motors and am skeptical that such a small, inexpensive motor could put out so much power. I realize that overvolting will harm my motor. I never said anything about the existing set. You say I can get a "10:1 MAX off a chain". I assume you only meant one set of gears. With two sets, I can probably get the gear train ratio you recommended, or close to it. It would be simple to swap out the gears with the correct size. BTW, thanks for your comments. Your raising questions that I didn't have answers to originally. I appreciate the feedback. Thanks.